🌊 Product Overview
The LiquaGen 4.5” x 20” Activated Alumina / GAC Filter Cartridge is our highest-capacity Big Blue solution for tackling two of the most harmful contaminants in groundwater—arsenic (As III & V) and fluoride. Packed with activated alumina media and a granular activated carbon (GAC) polishing layer, this cartridge provides safe, clean, and better-tasting water for the entire home.
With its large 4.5” diameter and 20” length, this cartridge delivers longer service life, higher flow rates, and extended contaminant removal capacity, making it the best choice for whole-house water filtration and heavy-duty applications.
✨ Key Benefits & Features
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🛡️ Arsenic & Fluoride Reduction – Targets arsenic III & V and fluoride for safer, healthier water.
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💧 Activated Alumina Media – Delivers up to 95% reduction efficiency at optimal pH (≈5.5).
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🌱 Carbon Polishing Layer – Enhances taste and odor while removing organics and VOCs.
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🔧 Big Blue 20” Compatibility – Fits all standard 4.5” x 20” whole-house housings.
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🚿 High-Capacity Design – Treats larger volumes of water before needing replacement.
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♻️ Easy Maintenance – Drop-in replacement; recommended service life of 6–12 months.
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⏱️ Extended Capacity – Provides up to 6,000–8,000 gallons, depending on water quality.
📋 Technical Specifications
| Parameter | Details |
|---|---|
| Model | LiquaGen 4.5” x 20” Activated Alumina / GAC Filter |
| Size | 4.5” x 20” (Big Blue Cartridge) |
| Media Type | Activated Alumina + Granular Activated Carbon (GAC) |
| Primary Functions | Reduces fluoride and arsenic (As III & V) |
| Capacity | ~6,000–8,000 gallons (varies by influent quality) |
| Recommended Lifespan | 6–12 months |
| pH Range for Best Results | ≈5.5 (optimal adsorption efficiency) |
| Operating Temp. | 40–100°F (4.4–37°C) |
| Max Pressure | 90 PSI (6.2 bar) |
| Housing Compatibility | Fits all standard 20” Big Blue housings |
🏠 Applications
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🚰 Whole-House Filtration – Supplies arsenic- and fluoride-reduced water to every tap.
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🌾 Well Water Treatment – Essential for rural areas with naturally high contaminant levels.
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🧊 Pre-Filtration for RO Systems – Reduces load on membranes, extending their life.
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🛁 Household Use – Provides safer water for bathing, cooking, and cleaning.
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🥤 Food & Beverage Preparation – Ensures clean, contaminant-reduced water for everyday consumption.
💙 Why Choose LiquaGen?
The LiquaGen 4.5” x 20” Activated Alumina / GAC Filter Cartridge is a premium whole-house solution for families who need high-capacity contaminant removal. With its Big Blue format, refillable design, and blend of activated alumina + GAC, it delivers long-lasting performance, safer drinking water, and fresher taste across every faucet.